Compared to the vastness of the warp and realspace,
the interior of the Webway built by the Old Ones was not actually very spacious.
More than half the structures in the Webway network spanning the Milky Way were like capillaries in a human body, measuring only a few meters to a few dozen meters in diameter.
Some Webway passages that opened into space, allowing the Aeldari to move their ships, could reach tens or even hundreds of kilometers in diameter.
Ultimately, however, this came down to the peculiar nature of the Webway itself.
A thick spatial veil separated realspace from the warp's sea of souls.
Although this veil seemed as thin as gauze when opened by a Warp Engine, its thickness actually varied across different scales.
The Webway network was built within this spatial veil.
Most Webway openings were positioned within the spatial veil, close to realspace.
Some passages closer to the warp, however, were prone to ruptures resembling internal bleeding.
Whenever these weak points near the sea of souls ruptured, warp energy and the daemons within it seeped into the Webway.
Even so, traveling through the Webway remained far safer than traveling through the warp.
After all, daemons only appeared occasionally in the Webway, while dangers abounded in the warp. For a network originally intended for military use, this level of danger was hardly a major flaw.
As for the openings into realspace, there was even less reason to worry.
But after the fall of the Old Ones, the Aeldari soon suffered their own catastrophe. The Webway lost all maintenance, let alone any prospect of expansion.
Now, Vashtorr was like a crazed bull, driving what had once been the Old Ones' Webway tunnel-boring machine wildly through the network.
Because of Longlin Star's size, combined with the Engine of Discord's